Patents Assigned to Arakawa Chemical Industries, Ltd.
  • Publication number: 20210301097
    Abstract: Provided is a barrier film including a gas barrier film and a primer layer disposed on one outermost surface of the barrier film and made of a cured product formed by using a composition for forming a primer layer, the composition containing a resin having a reactive carbon-carbon double bond, a resin not having a reactive carbon-carbon double bond but having a primary hydroxyl group, and a polyisocyanate compound, the primer layer having a surface wetting index of 40 dyn/cm or more.
    Type: Application
    Filed: February 6, 2020
    Publication date: September 30, 2021
    Applicants: TOPPAN PRINTING CO., LTD., ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Koji MURATA, Masayoshi SUZUTA, Akihiro YAMAZAKI, Toru HIGASHIMOTO
  • Publication number: 20210305574
    Abstract: Provided are a binder aqueous solution for a lithium ion battery, a negative electrode slurry for a lithium ion battery, a negative electrode for a lithium ion battery, and a lithium ion battery. The binder aqueous solution for a lithium ion battery has a pH of 5 or higher and contains: a water-soluble polymer (A) that is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 15 mol % to 99.9 mol % of an unsaturated carboxylic acid or an inorganic salt thereof, and that has a glass transition temperature of 110° C. or lower; and a hydrolyzed partial condensate (B) of an amino group-containing trialkoxysilane.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 30, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Shinji OZAKI, Naoki SASAGAWA, Hideki GODA
  • Publication number: 20210280872
    Abstract: Provided are a binder aqueous solution for a lithium-ion battery electrode, a slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery electrode contains an acidic group-containing water-soluble polymer (A) and an amino group-containing water-soluble polymer (B). The acidic group-containing water-soluble polymer (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 30 mol % to 90 mol % of a (meth)acrylamide group-containing compound (a), 3 mol % to 20 mol % of an unsaturated organic acid (b), and 5 mol % to 40 mol % of an alkali metal or alkaline earth metal salt (c) of the unsaturated organic acid. A 1% by mass aqueous solution of the amino group-containing water-soluble polymer (B) has a pH of 9 or higher.
    Type: Application
    Filed: February 4, 2021
    Publication date: September 9, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Katsuhiko IKEYATSU, Hideki GODA
  • Publication number: 20210269982
    Abstract: A powdery paper-strengthening agent comprising a branched (meth)acrylamide-based polymer (A).
    Type: Application
    Filed: September 9, 2019
    Publication date: September 2, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Ryusuke KAMBARA, Daisuke FUJIOKA, Shogo NISHIURA
  • Publication number: 20210151766
    Abstract: To provide a conductive carbon material dispersing agent for a lithium ion battery, a slurry for a lithium ion battery electrode, an electrode for a lithium ion battery, and a lithium ion battery The disclosure provides a conductive carbon material dispersing agent for a lithium ion battery including a water-soluble poly(meth)acrylamide (A-1) which contains 2 to 60 mol % of structural units derived from a (meth)acrylamide group-containing compound (a) and 10 to 70 mol % of structural units derived from an unsaturated sulfonic acid or salts thereof (b), and which has a weight average molecular weight of 10,000 to 300,000.
    Type: Application
    Filed: November 12, 2020
    Publication date: May 20, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Shinji OZAKI, Katsuhiko IKEYATSU, Katsuya OKUBO, Satoru AOYAMA, Naoki SASAGAWA, Hideki GODA
  • Publication number: 20210114337
    Abstract: A laminate comprising a plastic substrate (A); a hardened organic polymer layer (B) provided on a surface of the plastic substrate (A) and having a storage elastic modulus of from 0.01 to 5 GPa and tan ? of from 0.1 to 2.0 at 25° C. which are measured at a temperature elevating rate of 2° C./min by a dynamic viscoelasticity test stipulated in JIS K 7244; an organic/inorganic composite layer (C) provided on a surface of the hardened organic polymer layer (B) and containing covalently bound organic polymer and metal oxide nanoparticles; and an inorganic layer (D) provided on a surface of the organic/inorganic composite layer (C) and comprising secondary particles of ceramic or metal.
    Type: Application
    Filed: April 17, 2018
    Publication date: April 22, 2021
    Applicants: National Institute of Advanced Industrial Science and Technology, Arakawa Chemical Industries, Ltd.
    Inventors: Hiroaki Noda, Jun Akedo, Hideki Goda, Takeshi Fukuda, Haruhisa Togashi
  • Publication number: 20210083262
    Abstract: Provided are a binder aqueous solution for a lithium-ion battery, a slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery contains a water-soluble poly(meth)acrylamide (A). The water-soluble poly(meth)acrylamide (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 30 mol % to 95 mol % of a (meth)acrylamide group-containing compound (a), and 5 mol % to 40 mol % of an alkoxyalkyl (meth)acrylate (b) represented by the following general formula (1), CH2?C(R1)—CO—O—R2—O—R3??(1) (in which R1 is a hydrogen atom or a methyl group, R2 is an alkylene group having 1 to 4 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and a total number of carbon atoms of the groups R1, R2 and R3 is 5 or less.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 18, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Katsuhiko IKEYATSU, Shinji OZAKI, Hideki GODA
  • Publication number: 20210075019
    Abstract: Provided are a binder aqueous solution for a lithium-ion battery electrode, a slurry for a lithium-ion battery electrode, a lithium-ion battery electrode, and a lithium-ion battery. The binder aqueous solution for a lithium-ion battery electrode contains a water-soluble polymer (A). The water-soluble polymer (A) is a polymer of a monomer group containing, with respect to 100 mol % of the monomer group, 5 mol % to 80 mol % of a hydroxyl group-containing vinyl ether (a). In one embodiment, the monomer group contains 20 mol % to 95 mol % of a (meth)acrylamide group-containing compound (b).
    Type: Application
    Filed: September 2, 2020
    Publication date: March 11, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Katsuya OKUBO, Hideki GODA, Naoki SASAGAWA, Satoru AOYAMA
  • Publication number: 20210057748
    Abstract: Provided are a thermally crosslinkable binder aqueous solution for a lithium-ion battery, a thermally crosslinkable slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, and a lithium-ion battery. The thermally crosslinkable binder aqueous solution for a lithium-ion battery contains a water-soluble poly(meth)acrylamide (A) and a divalent or higher valent metal ion. The water-soluble poly(meth)acrylamide (A) contains 2 mol % to 60 mol % of a constituent unit derived from a (meth)acrylamide group-containing compound (a), and 10 mol % to 50 mol % of a constituent unit derived from one or more unsaturated acids selected from the group consisting of unsaturated carboxylic acids and unsaturated sulfonic acids or an inorganic salt thereof (b). The divalent or higher valent metal ion is contained in an amount of 0.5 mol % to 30 mol % with respect to 100 mol % of an acid group contained in the component (b).
    Type: Application
    Filed: August 20, 2020
    Publication date: February 25, 2021
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Shinji OZAKI, Hideki GODA, Naoki SASAGAWA, Satoru AOYAMA, Katsuya OKUBO, Katsuhiko IKEYATSU
  • Publication number: 20200395615
    Abstract: Provided are a thermally crosslinkable binder aqueous solution for a lithium-ion battery, a thermally crosslinkable slurry for a lithium-ion battery negative electrode, a negative electrode for a lithium-ion battery, a lithium-ion battery negative electrode material, as well as a lithium-ion battery and a method for producing the same.
    Type: Application
    Filed: June 16, 2020
    Publication date: December 17, 2020
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Hideki GODA, Naoki SASAGAWA, Shinji OZAKI, Satoru AOYAMA, Katsuya OKUBO, Katsuhiko IKEYATSU
  • Patent number: 10427388
    Abstract: An emulsion composition according to the present invention includes: a polymerizable compound comprising two or more (meth)acryloyl groups; a surfactant; and a dispersion medium including water as a principal component, in which an oil droplet diameter D90 corresponding to a diameter at cumulative 90% by volume in the oil droplet size distribution of oil droplets comprising the polymerizable compound and the surfactant, measured according to a laser diffraction and scattering measurement process is less than 1.8 ?m. A maximum oil droplet diameter Dmax of the oil droplets, measured according to the laser diffraction and scattering measurement process is preferably less than 4.0 ?m. A content of the polymerizable compound in the composition with respect to 100 parts by mass of a total of components other than the dispersion medium is preferably no less than 40 parts by mass. The oil droplets may further comprise an inorganic particle.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: October 1, 2019
    Assignee: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Akihisa Inoue, Taichi Maruyama, Shinji Tonsho, Naoyuki Makiuchi, Naoyuki Kawashima
  • Patent number: 10424791
    Abstract: It is an assignment to be solved to provide an electrode for secondary battery, electrode in which the active material is suppressed from coming off or falling down from the electricity collector, and that has excellent cyclic performance. It is characterized in that, in an electrode for secondary battery, the electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of electricity collector, said hinder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I): wherein “R1” is an alkyl group whose number of carbon atoms is from 1 to 8; “R2” is an alkyl group or alkoxyl group whose number of carbon atoms is from 1 to 8; and “q” is an integer of from 1 to 100.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: September 24, 2019
    Assignee: Arakawa Chemical Industries, Ltd
    Inventors: Hitotoshi Murase, Toshio Otagiri, Kyoichi Kinoshita, Katsufumi Tanaka, Manabu Miyoshi
  • Patent number: 10392465
    Abstract: A polymerized rosin compound includes a rosin dimer component (A) including a bifunctional rosin dimer component (a1) represented by formula (1): ROOC—X—COOR. In this formula, X represents a rosin dimer residue derived from abietic acid, neoabietic acid, or palustric acid, which are resin acids having conjugated double bonds; and R represents hydrogen, an alkyl group of I to 5 carbon atoms, or a benzyl group. The rosin dimer component (A) contains a bifunctional rosin dimer component (a1) in the amount of 80% by weight or more and a rosin trimer or higher oligomer component (B) in the range from 1.5 to 3.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: August 27, 2019
    Assignee: Arakawa Chemical Industries, Ltd.
    Inventors: Yoshimasa Sato, Naoki Kamatani, Kouji Takahashi, Kohei Hatakeda, Hideharu Takeuchi
  • Publication number: 20190249008
    Abstract: Provided is a composite plastic molded product, including: (A) engineering plastic; and (B) rosin ester being a reactant of rosins and C1-9 monohydric alcohol, in which a content of abietic acid-type resin acid and ester thereof having a conjugated double bond without an aromatic ring is less than 1 weight %, and in which a glass transition temperature is equal to or less than ?15° C.
    Type: Application
    Filed: October 6, 2017
    Publication date: August 15, 2019
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshimasa SATO, Kensuke HIKICHI, Tetsuya KASHIHARA, Yasuhiro MATSUSHITA
  • Patent number: 10253215
    Abstract: An object of the present invention is to provide an adhesive composition that is substantially odorless and has an extremely good color and excellent adhesive properties or tack at low temperatures of about 5° C. and in which deterioration over time caused by heat or light is suppressed. The present invention relates to an adhesive composition comprising a liquid rosin ester compound, the liquid rosin ester compound being obtained by reacting a rosin compound with a C1-10 monohydric alcohol compound and having a Gardner color of 1 or less, a glass transition temperature of ?20° C. or less, a degree of esterification of 93 wt % or more, and a ratio (Y?/Y) of the total area of peaks in 16- to 22-min retention time region (Y?) to the total area of all the peaks (Y) measured by gas chromatography under the following conditions of 200 ppm or less.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: April 9, 2019
    Assignee: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Takashi Nakatani, Yoshimasa Sato, Tetsuya Kashihara, Yasushi Funakoshi
  • Publication number: 20180043667
    Abstract: An emulsion composition according to the present invention includes: a polymerizable compound comprising two or more (meth)acryloyl groups; a surfactant; and a dispersion medium including water as a principal component, in which an oil droplet diameter D90 corresponding to a diameter at cumulative 90% by volume in the oil droplet size distribution of oil droplets comprising the polymerizable compound and the surfactant, measured according to a laser diffraction and scattering measurement process is less than 1.8 ?m. A maximum oil droplet diameter Dmax of the oil droplets, measured according to the laser diffraction and scattering measurement process is preferably less than 4.0 ?m. A content of the polymerizable compound in the composition with respect to 100 parts by mass of a total of components other than the dispersion medium is preferably no less than 40 parts by mass. The oil droplets may further comprise an inorganic particle.
    Type: Application
    Filed: September 1, 2016
    Publication date: February 15, 2018
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Akihisa INOUE, Taichi MARUYAMA, Shinji TONSHO, Naoyuki MAKIUCHI, Naoyuki KAWASHIMA
  • Patent number: 9758703
    Abstract: Provided is a resin acid ester-based tackifier having a good compatibility with a synthetic rubber elastomer, being capable of reducing the melt viscosity of the elastomer, and being capable of imparting excellent adhesive properties and/or pressure-sensitive adhesive properties to the elastomer.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 12, 2017
    Assignee: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Yasushi Funakoshi, Takashi Nakatani
  • Patent number: 9670382
    Abstract: The base film of the invention is a base film of a pressure-sensitive adhesive sheet for laminating onto a semiconductor wafer composed of: (A) a layer of a cured product in which a composition including a polyether polyol urethan(meth)acrylate oligomer and an energy ray curable monomer is cured by energy ray irradiation, and (B) a thermoplastic resin layer. The present invention, by using a surface protection sheet, protects a circuit side of a wafer with bumps, prevents collapse of bumps on the circuit side when grinding the back surface, and prevents generation of dimples or cracks on the grinding surface.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 6, 2017
    Assignees: LINTEC Corporation, Arakawa Chemical Industries, LTD.
    Inventors: Kazuyuki Tamura, Takashi Akutsu, Yuki Eto, Tomohide Hukuzaki
  • Patent number: 9559073
    Abstract: To prevent bumps on the circuit side of a bump-bearing wafer from getting crushed when grinding the back side of said wafer while protecting the circuit side with a surface-protection sheet, and also to minimize the formation of dimples and cracks on the side being ground. [Solution] This base film for a pressure-sensitive adhesive sheet bonded to a semiconductor wafer comprises: (A) a layer obtained by using energy rays to cure a formulation containing a urethane (meth)acrylate oligomer and a thiol-group-containing compound; and (B) a layer comprising a thermoplastic resin.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 31, 2017
    Assignees: LINTEC Corporation, Arakawa Chemical Industries, LTD
    Inventors: Kazuyuki Tamura, Takashi Akutsu, Yuki Eto, Tomohide Hukuzaki
  • Publication number: 20170015866
    Abstract: An object of the present invention is to provide an adhesive composition that is substantially odorless and has an extremely good color and excellent adhesive properties or tack at low temperatures of about 5° C. and in which deterioration over time caused by heat or light is suppressed. The present invention relates to an adhesive composition comprising a liquid rosin ester compound, the liquid rosin ester compound being obtained by reacting a rosin compound with a C1-10 monohydric alcohol compound and having a Gardner color of 1 or less, a glass transition temperature of ?20° C. or less, a degree of esterification of 93 wt % or more, and a ratio (Y?/Y) of the total area of peaks in 16- to 22-min retention time region (Y?) to the total area of all the peaks (Y) measured by gas chromatography under the following conditions of 200 ppm or less.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 19, 2017
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Takashi NAKATANI, Yoshimasa SATO, Tetsuya KASHIHARA, Yasushi FUNAKOSHI